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  • 1
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    Internal wire guide for GTAW welding (1989)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: A welding torch for gas tungsten arc welding apparatus has a filler metal wire guide positioned within the torch, and within the shielding gas nozzle. The wire guide is adjacent to the tungsten electrode and has a ceramic liner through which the wire is fed. This reduces the size of the torch and eliminates the outside clearance problems that exit with external wire guides. Additionally, since the wire is always within the shielding gas, oxidizing of the wire is eliminated.
    Keywords: ENGINEERING (GENERAL)
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 2
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    Electrode carrying wire for GTAW welding (1990)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: A welding torch for gas tungsten arc welding apparatus has a hollow tungsten electrode including a ceramic liner and forms the filler metal wire guide. The wire is fed through the tungsten electrode thereby reducing the size of the torch to eliminate clearance problems which exist with external wire guides. Since the wire is preheated from the tungsten more wire may be fed into the weld puddle, and the wire will not oxidize because it is always within the shielding gas.
    Keywords: ENGINEERING (GENERAL)
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 3
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    Tool Measures Diameters Of Posts With Limited Lateral Access (1995)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Simple tool used in conjunction with conventional vernier caliper to measure outside diameter of round post or tube to which lateral access limited. Chuck-like jaws closed gently onto end of post or tube. Tool slipped off without changing jaw setting, and distance between jaws measured with vernier caliper. In original application, posts are liquid-oxygen-injector posts surrounded by forest of many such posts on rocket engine. Used in other applications in which desire to measure diameters despite limited lateral access, provided there is longitudinal access.
    Keywords: MECHANICS
    Type: MFS-29963 , NASA Tech Briefs (ISSN 0145-319X); 19; 5; P. 72
    Format: text
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    NASA TECHNICAL REPORTS
  • 4
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    Mechanical Agitation For Aqueous Cleaning (1995)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Cleaning basket placed in aqueous cleaning solution mechanically agitated by air spring. Compressed air at oscillating pressure supplied to air spring to produce repeated vertical motion of cleaning basket.
    Keywords: MACHINERY
    Type: MFS-29962 , NASA Tech Briefs (ISSN 0145-319X); 19; 6; P. 77
    Format: text
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    NASA TECHNICAL REPORTS
  • 5
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    Aqueous-Spray Cleaning System (1996)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Simple aqueous-spray cleaning system with overall dimensions comparable to large kitchen refrigerator constructed for use in cleaning hardware in shop. Made of commercially available parts and materials. Incorporates economical cleaner-and-rinse-recycling subsystem, as well as programmable logic-controller device for either manual or automatic operation.
    Keywords: MACHINERY
    Type: MFS-30074 , NASA Tech Briefs (ISSN 0145-319X); 20; 1; P. 75
    Format: text
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    NASA TECHNICAL REPORTS
  • 6
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    Oven Evaporates Isopropyl Alcohol Without Risk Of Explosion (1996)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Ordinary convection oven with capacity of 1 ft.(sup3) modified for use in drying objects washed in isopropyl alcohol. Nitrogen-purge equipment and safety interlocks added to prevent explosive ignition of flammable solvent evaporating from object to be dried.
    Keywords: PHYSICAL SCIENCES
    Type: MFS-30050 , NASA Tech Briefs (ISSN 0145-319X); 20; 1; P. 60
    Format: text
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    NASA TECHNICAL REPORTS
  • 7
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    Manifold For Flushing Tubes With Cleaning Solution (1995)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Custom-built manifold mounted on cleaning basket enables simultaneous flushing of 80 tubes with cleaning solution. In original application, tubes components of rocket-engine nozzle under construction. However, basic manifold configuration adapted to other applications (e.g., fabrication of heat exchangers) in which there is need for simultaneous cleaning of many tubes of identical size and shape.
    Keywords: FABRICATION TECHNOLOGY
    Type: MFS-29964 , NASA Tech Briefs (ISSN 0145-319X); 19; 5; P. 80
    Format: text
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    NASA TECHNICAL REPORTS
  • 8
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    Cheaper Custom Shielding Cups For Arc Welding (1992)
    In:  Other Sources
    Details
    Publication Date: 2019-07-12
    Description: New way of making special-purpose shielding cups for gas/tungsten arc welding from hobby ceramic greatly reduces cost. Pattern machined in plastic. Plaster-of-paris mold made, and liquid ceramic poured into mold. Cost 90 percent less than cup machined from lava rock.
    Keywords: FABRICATION TECHNOLOGY
    Type: MFS-29815 , NASA Tech Briefs (ISSN 0145-319X); 16; 9; P. 118
    Format: text
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    NASA TECHNICAL REPORTS
  • 9
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    Rolling Stitch Welder For Foil (1992)
    In:  Other Sources
    Details
    Publication Date: 2019-07-12
    Description: Hand-operated rolling spotwelder stitch-welds foil faster and more consistently than single-spotwelding gun without damaging it. Internal spring reacts against roller frame, exerting force on welding wheel when rollers contact workpiece.
    Keywords: FABRICATION TECHNOLOGY
    Type: MFS-29740 , NASA Tech Briefs (ISSN 0145-319X); 16; 6; P. 79
    Format: text
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    NASA TECHNICAL REPORTS
  • 10
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    Spot-Welding Gun Is Easy To Use (1991)
    In:  Other Sources
    Details
    Publication Date: 2019-07-12
    Description: Electrical-resistance spot-welding gun designed to produce more welds per unit time by decreasing technician's effort and fatigue. Vacuum cups on frame secure welding gun to workpiece while compressed air drives welding tip against workpiece to make spot resistance weld. When weld completed, vacuum in frame cups released so frame and gun moved to position of next spot weld.
    Keywords: FABRICATION TECHNOLOGY
    Type: MFS-29693 , NASA Tech Briefs (ISSN 0145-319X); 15; 6; P. 119
    Format: text
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    NASA TECHNICAL REPORTS
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